In the vessel under the piston there was a mole of a diatomic ideal gas at temperature T0. A constant temperature gradient is established in the vessel, with the bottom temperature being T0 and the piston temperature being 9T0. Determine the change in entropy of the gas. Note. See the problem (In a cylindrical vessel under the piston there is an ideal gas at temperature T0. The side walls of the vessel do not allow heat to pass through. The piston of the vessel is heated to T = 9T0, and the bottom temperature is maintained equal to T0. How many times will the initial volume change

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